Year Percent Change From Preceding Period 2004-01-01 3.872525218479650 2005-01-01 -0.758110596471175 2006-01-01 0.639755634775088 2007-01-01 2.044943319494830 2008-01-01 0.670039804510726 2009-01-01 -0.584957099072788 2010-01-01 0.900007454410695 2011-01-01 1.589538693397550 2012-01-01 1.993429283734940 2013-01-01 2.833429960541900 2014-01-01 3.301521294322060 2015-01-01 3.074598774271530 2016-01-01 2.096079561831890 2017-01-01 1.023499822655320 2018-01-01 1.234422046437020 2019-01-01 1.854896872789920